[jira] [Resolved] (SPARK-38977) Fix schema pruning with correlated subqueries

["L. C. Hsieh (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-38977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

L. C. Hsieh resolved SPARK-38977.
---------------------------------
    Fix Version/s: 3.3.0
                   3.2.2
       Resolution: Fixed

Issue resolved by pull request 36303
[https://github.com/apache/spark/pull/36303]

> Fix schema pruning with correlated subqueries
> ---------------------------------------------
>
>                 Key: SPARK-38977
>                 URL: https://issues.apache.org/jira/browse/SPARK-38977
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.2.0, 3.2.1, 3.3.0
>            Reporter: Anton Okolnychyi
>            Assignee: Anton Okolnychyi
>            Priority: Major
>             Fix For: 3.3.0, 3.2.2
>
>
> Schema pruning fails for some queries with correlated subqueries.
> {noformat}
> sql(
>   s"""SELECT name FROM contacts c
>      |WHERE
>      | EXISTS (SELECT 1 FROM ids i WHERE i.value = c.id)
>      | AND
>      | EXISTS (SELECT 1 FROM first_names n WHERE c.name.first = n.value)
>      |""".stripMargin)
> {noformat}
> {noformat}
> [info]   org.apache.spark.SparkException: Failed to merge fields 'value' and 'value'. Failed to merge incompatible data types int and string
> [info]   at org.apache.spark.sql.errors.QueryExecutionErrors$.failedMergingFieldsError(QueryExecutionErrors.scala:936)
> {noformat}



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